// <I>Reports<D> awarded with "Best paper" crystal prize : 59th Annual sci. conf. Ruse univ. and Union of Scientists "New industries, digital economy, society - projections of the future III'', Ruse, Silistra, Razgrad, 2020, p. 268-274.
P. R. Penchev; P. Vitliemov
Каталог "Библиографии" | Статии от книги - библиография
// <I>Proceedings<D> of the 4th international conference on Technology and automation, Thessaloniki, Greece, 5-6 october 2002. - Thessaloniki, 2002, p. 399-404.
M. I. Mladenov; S. Penchev; R. Tsonev;
P. Daskalov;
V. B. Stoyanov;
E. Kuleva;
B. G. Borisov и др.